Physics Flashcards
(45 cards)
Formula for Length of Harmonics on string with both ends fixed.
L = nλ/2
Formula for Length of Harmonics on string with one end free.
L = nλ/4
Formula for sound in a pipe with open pipe.
L = nλ/2
Formula for sound in a pipe with closed pipe.
L = nλ/4
First 3 harmonics for sound in an open pipe
1, 2, 3
First 3 harmonics for sound in a closed pipe
1, 3, 5
First 3 harmonics for a string with both ends fixed
1, 2, 3
First 3 harmonics for a string with one end free
1, 3, 5
Doppler’s Effect Formula
f’ = f((v_wave+v_observer)/(v_wave-v_source))
Snell’s law
v_i/v_r = sinθ_i/sinθ_r = n_r/n_1
Characteristics of Image formed in convex mirror
Virtual
Upright
Diminished
Concave mirror Characteristics when object is farther away from the centre of curvature
Real
Diminished
Inverted
Concave mirror Characteristics when the object is between the focus and the centre of curvature
Real
Enlarged
Inverted
Concave mirror Characteristics when the object is within the focus
Virtual
Enlarged
Upright
Refractive index formula
n=c/v
Critical angle formula
sinθ_i = n_r/n_i
Concave Lens Image produced characteristics
Virtual
Diminished
Upright
Convex lens Characteristics when object is outside the centre of curvature
Real
Inverted
Diminished
Convex lens characteristics when the object is between the focus and the centre of curvature
Real
Inverted
Enlarged
Convex lens characteristics when the object is inside the focus
Virtual
Upright
Enlarged
Magnification Formula
Magnification = Image Height/Object Height
How to convert Celsius to Kelvin
Add 273.15
How to convert Kelvin to Celsius
Subtract 273.15
1st Law of Thermodynamics
ΔU = Q-W